Machine for making corrugated paper.



S. M. LANGSTON.

MACHINE FOR MAKING CORRUGATED PAPER.

APPLICATION FILED SEPT. 2, I9I5. I y

A Patented June 13, 1916.

2 SHEETS-SHEET I.

IIIIIIHI S. M. LANGSTON.

MACH-INE FOR MAKING CORRUGATED PAPER. APPLICATION ULED sEPT.2. 1915.

1,1 86.998. Patented June 13, 1916.

SAMUEL n. LANGsTomor N nw JERSEY.

mcnnrn Fonmikme connucnrnn rerun.

speloi'cation of Letters ratent. lPatelltqii June 13, 1916.

Application tiled September 2, 1915. Serial No. 48,604.

To all 'whom 'it may concern: -I

Be it known that I, SAMUEL M. .1 /hicieron,

a citizen of the United States and'reside'nt of Wenonah, in the county of Gloucester and State of New Jersey, have invented certain new and useful Improvements 1n Machines for Making Corrugated Paper, of which the following is a specification. Thisv invention relates to certain improvements in machines for making single faced corrugated paper, that is, paper 1n whlch a facing sheet is glued to the crowns ofthe corrugations of a second and corrugated sheet. The product as'it leaves the machine may be wound-in rolls or'may be passed directly to a secondI machine for the application of a second facing sheet to' the opposite side of the corrugated' sheet, or it may be disposed of in any other manner desired.

My present invention involves several 1mportant features whereby the constructlon, as Well as the operation, of the machine is simplied and the capacity is increased by insuring a more'complete drying or hardening of the adhesive without unduly increasing the size of the machine or the number of heating units. 'I

A further important feature resldes in the construction of the adhesive ap )lying mechanism whereby the latter ma e adjusted to better regulate the delivery of adhesive to the crowns of the corrugations, or may be Iioved to inoperative position during the threading of the machine or when the machine is stopped.

Other features will be pointed out more particularly hereinafter.

Reference is to be had to the accompanying drawings in which I have illustrated one embodiment of my invention, although I wish it particularly understood that the illustrated machine is only one form which my invention may assume and that various changes may be made within the scope of the appended claims. v

In these drawings in which similar reference characters indicate correspondin parts in the several views, Figure 1 is a si e view of the machine, and Figs. 2, 3 and 4 are sectional views on the lines 22, 3-3 and 4 4 respectively of Fig. 1.

In the illustrated machine, I employ two main frame members 10 at the opposite sides thereof and which serve as supports for the various working parts. At the upper part of the machine, I mount a pair of corrugatng rollers 11 and 12 and a plain roller 13 which serve to corrugate one sheet and a ply a second sheet thereto. The axes of the trfiree rollers-are in approximately the same plane so that the oorrugating roller 11 and the plain roller 13 are tangent to the center roller 12 at approximately diametrically opposite polnts. The center roller 12 is journaled directl in the frame of the machine and is non-a justable. The bearing may include a removable ca 14 whereby the roller 12 may be removed rom the machine .without removing the rollers 11 or 13, or disturbing the bearings thereof. The other corrugating roller 11 is mounted in bearing .blocks 15 which are slidable in a recess 16 17 engage with the bearing blocks or journal boxes 15 and the tension of these springs is governed by adjustable stops 18. When the roller 11 is forced toward the roller 12 to the maximum distance, the teeth of the corrugations of each roller will seat at the bottoms of thegrooves of the other roller, and by regulating the tension of the springs, the two rollers may be pressed together under any desired pressure. The roller 13 is mounted in eccentric bearings or journal boxes 19 which latter are detachably mountedl on the frame so as to be removed independently of the roller 12. By rotating the eccentric bearings 19, the axis of the roller 13 may be moved toward or from the axis of the roller l2 and the surfaces of the two rollers may be pressed together with any desired degree of non-yielding pressure.

For simultaneously adjusting both eccentric bearings so as to maintain the axes of the rollers .12 and 13 in parallelism, I preferably provide an auxiliary shaft 20 having 'gears 21 meshing with gears rigid with the' eccentric bearings., Beneath the gearing mechanism I mount an adhesive receptacle 22 within which rotates a roller `23, of such size that its lupper surface is at a material distance above the level of the adhesive. For transferring the adhesive from this roller to the crowns of the corrugations of the paper as the latter passes over the roller 12, I employ a transferring roller 24 which is adjustable tward and from the roller 12 and is relatively adjustable in respect to the roller 23. For securing the first mentioned adjustment, the roller 12 is journaled in arms 25 ivoted on the frame of the machine at t e ends of the roller 23 so that by swinging the arms, the roller 24 may be moved circumferentially of the roller 23 and toward and from the roller 12. At the pivoted ends of the arms 25, means is provided for holding the arms in any desired adjusted position. This may be of any well known form and for that reason has not. been illustrated. y

Foradjusting the adhesive rollers 23 and 24 toward and from each other, I prefer- `ably mount the shaft of the roller 23 in eccentric bearings' or journal boxes 27 so that by rotating the latter, the axis of the roller 23 may be moved toward and from the axis of the roller 24. To secure this adjustment, the eccentric bearings are preferably provided with ing with pinions 26a on an auxiliary shaft 28. The latter is provided with a handwheel 28a. pinion 26a in respect to the gear 26 and the comparatively small eccentricity of the bearing 27, he roller 23 may be given a very delicate adjustment and the amount of adhesive transferred may be accurately controlled. j

I prefer to adjust the roller 23 rather than the roller 24 as this may be done without in any way affecting the adjustment of theroller 24 in respect to the corrugating roller 12. By varying. the distance between the adhesive rollers, the amount of adhesive transferred to the roller 24 may be controlled and by adjusting the roller 24 in respect to the roller 12, the amount delivered to the crowns of the corrugations may be controlled, although preferably the adjustment of the roller 24 is primarily to permit it to be brought into or out of contact with the paper and to permit it to be moved a material distance from the roller 12 when the machine is not in operation.

The adhesive receptacle 22 is preferably i so mounted that it may be lowered away from the roller 23 when the machine is not in operation. Avery simple means for permitting of this adjustment includes parallel links 29, each having one end connected Y to the frame of the machine and the other end to the receptacle so that as the .links are swung about their lower ends as pivots, the receptacle will remain horizontal. For raising and lowering thereceptacle and for locking it in raised position, I provide a cam 30 pivoted on the machine and rotatable by means of a suitable handle 31. The cam has a flat peripheral portion 32 at its highest point whichl may engage with a bearing plate on thev under side of the receptacle so that the camitself w1 ll actl as a support when the receptacle 1s 1n raised position as indicated in the drawing. The distribution of weight is such that the receptacle normally tends to move toward the left from the position shown and therefore as the cam 30 is rotated rcounter-clockwise,

large gears 26 mesh- Due to the small size of the the entire receptacle may be lowered to any point desired. Preferably, the bearings of the shaft 33 carrying the cam are friction tight so that the cam may stand in any desired adjusted position. When in its lowermost position, the liquid level will be below `the lower surface of the adhesive roller 23.

In the operation of the machine, one sheet of paper -A- is delivered preferably over arollerl 35 to the line of tangency of the corrugating rollers 11 and 12. The latter are resiliently pressed together with the desired pressure by the spring 17 and adjusting means 18, and the corrugations are firmly impressed in the sheet. The paper follows the lower side of the corrugating roller 12 and passes between the latter and the adhesive roller 24 so that the adhesive, preferably silicate of soda, is .delivered in the desired quantity to the crowns of the corrugations. The heet continues to follow the surface of the roller 12 to the line of tangency between this roller and the roller` 13, whereby a second sheet -B- is applied to the crowns of the corrugations.

lAs an important feature of my invention, I internally heat the roller 12 and maintain the combined sheet in contact with this roller for a material distance beyond the line of tangency between the rollers 12 and 13 where the two sheets are brought together. As shown, I mounta roller f 36 in pivoted arms 37 so that it may engage with the roller 13 on the upper side and between the rollers 11 and 13 the combined sheet is caused to follow the heated corrugating roller 12 from the point where the corrugated sheet and the facing sheet are brought together, until it passes beneath the roller 36. The latter may be pressed down against the corrugating roller so as to rmly press the facingsheet vagainst the corrugations, a second time, the first pressure being applied by the roller 13. For holding down the roller 36, I may rely merely upon the friction at the bearings of the pivoted arms 37, or I may provide separate adjusting means. As shown, the links 37 have extensions 38 slotted lengthwise to receive a pivoted locking bolt 39 carried by the frame. The extensions are also preferably slotted to receive a flange 40 on a nut 41 threaded on a bolt 39. Byfthe loosening or tightening of the nut 41, the roller 36 may be forced down against the roller 12 or may be raised away from it. By making the locking bolt 39 and nut 41 freely detachable from the extension or arm 38, the nut may be loosened, the locking bolts 39 swung about from pivotal supports out of engagement with the arms 38 and the links 37 and the-roller, may be swung upwardly and entirely away from the corrugating roller 12 to facilitate the threading 13o of the machine. This adjustment of the roller 36 might be secured by eccentric bushing similar to those of the roller 13 if desired and this would eliminate the arms 37 and parts attached thereto. v

lowsvthe roller 12 through approximately e .time the facing sheet -B- is applied and will continue to -be heated until they leave the corrugating roller beneath the roller 36. By this arrangement, whereby heat and adjustable pressure are applied, the adhesive will be thoroughly dried before the combined sheet leaves the roller 12 and no auxiliary heating or drying means need be employed. f The corrugating roller 11 is also preferably internally heated although this is not as essential as it is to heat the roller 12. The roller 13 is preferably heated so that the facing sheet B will be dried and heated before it is applied to the adhesive covered lcrowns of the corrugated sheet.

By' causing the facing sheet -B- to travel over a roller 43 disposed adjacent to the roller 13 and approxlmately diametrically opposite to the roller 12, the facing sheet is caused to travel along the periphery of the roller 13 for a material distance. This is of greater importance where the roller 13 is internally heated than it is where such heatin of the roller`13 is omitted. n

Various fea-tures of construction commonly employed in machines for making corrugated paper may be employed in the present machine although as they constitute no portion of my invention, I have not illustrated them. I refer particularly to the use of guides or other means for holding the corrugated sheet in firm engagement with the roller 12 from the time -it leaves the corrugating roller 11 until it reaches the facing sheet applying roller 13. I have not illustrated the pipmg connections for supplying steam or other-,heating medium to the various rollers as such may be constructed in accordance with the well known practice.

It is to be understood that the rollers 11, 12 and 13 are positively driven and vwith the same peripheral speeds, and that the adhesive roller 23 is also mechanically driven. Any suitable arrangement of driving mechanism and gears may be provided for this purpose. It is not essential that the rollers 35, 36, and 43 be driven, although they may be if desired. The adhesive roller 24 1s drlven by gears from the shaft of the roller 23 or in any other suitable manner.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1.. A machine for making corrugated paper including a corrugated roller, a plain roller coacting therewith to press together a plain sheet and a corrugated` sheet, a third roller, a air of pivotally supported arms for carrying the latter, and means coacting with said arms for pressing said plain roller into engagement with said corrugated roller beyond the line of tangency of the first mentioned rollers.

2. A machine for making corrugated paper including a corrugating roller, an adhesive coated roller, an adhesive transferring roller, eccentrics supporting said adhesive coated roller, arms journaled on said eccentrics and supporting said adhesive transferring roller whereby said adhesive transferring roller may be adjusted circumferentially of said adhesive coated roller and toward and from said corrugating roller,

means for rotating said eccentrics to adjust said adhesive coated roller toward and from said adhesive transferring roller, and means for applying a plain sheet to the crowns of the adhesive covered corr'gations of the paper. v

3. A machine for making corrugated paper, including a, corrugated roller, an adhesive coated roller, eccentric sleeves constitutingjournals for said last mentioned roller, an adhesive transferring roller, arms supporting saidk transferring roller and journaled to swing about axes coincident with the centers of said eccentric sleeves, and means for applying a plain sheet to the crowns of the adhesive covered corrugations of the paper. y

4. A machine for making corrugated paper, including a corrugating roller, an adesive coated roller, eccentrics supporting said adhesivecoated roller, an adhesive transferring roller, pivoted arms extending substantially radially of said adhesive coated roller and supporting said adhesive ,transfe ring roller whereby said adhesive Camden -.nd State of New Jersey this 31stv day of August, A. D. 1915.

SAMUEL M. LANGSTON. Witnesses:

HARRY J. GREWE, CARL D. EVANS. 

